Über die Darstellung von 1.1.4.4-Tetramethyl-1.4-distanna- 2.5-cyclohexadien und dessen Bis(kupfer(I)-chlorid)-Komplex / Synthesis of 1,1,4,4-Tetramethyl-1,4-distanna-2,5-cyclohexadiene and its Bis(copper(I)chloride) Complex

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Abstract
Hydrostannation of dimethyldiethynylstannane with dimethylstannane leads to 1,1,4,4-tetramethyl-1,4-distanna-2,5-cyclohexadiene, a simple representative of the 1,4-distanna-2,5-cyclohexadiene ring system. With copper(I) chloride an unusually stable bis(copper(I) chloride) complex is obtained